Grid grating, also known as steel grating, is a type of steel product made by crossing and welding flat steel bars at certain intervals with crossbars (twisted square steel, square steel, round steel, flat steel, etc.) to form a square grid pattern. It is primarily used for drain covers, structural platform panels, and stair treads. The crossbars are usually made of twisted square steel. Steel grating is generally made of carbon steel, with a hot-dipped zinc coating to prevent oxidation. Stainless steel can also be used. Steel grating features ventilation, lighting, heat dissipation, anti-slip, and explosion-proof properties.